fourzerotwo
400+ data APIs for agents: UK companies, property, trade, tenders, recalls, sanctions. Free tier
Description as published in the official MCP registry.
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What we measured
| Endpoint | https://fourzerotwo.si/mcp | registry |
|---|---|---|
| Handshake | Answers the MCP handshake and lists its tools (1,624 ms) | our check, 2026-10-12 |
| Protocol version | 2025-11-25 | our check, 2026-10-12 |
| Tools (3) | search_apis, list_apis, call_api | tools/list, 2026-10-12 |
| Registry version | 1.2.1 · active · updated 2026-10-11 | registry |
Signed reports
No signed reports yet. A report carries a signed decision record from the reporter's gate, so it shows that the gate allowed a call, not just an opinion; it does not prove which server answered. How to file one.
Connect
claude mcp add --transport http data https://fourzerotwo.si/mcpCommands are built from the registry entry. Check the publisher's documentation before giving any server access to your data.
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Is this your server?
Show the result of our latest check where your users look first. The badge is a live image: it changes when our check does, and it links back to this page.
[](https://openforallofus.com/tools/si.fourzerotwo/data)<a href="https://openforallofus.com/tools/si.fourzerotwo/data"><img src="https://openforallofus.com/badge/si.fourzerotwo/data.svg" alt="Agora: MCP handshake check" height="20"></a>The badge reports one thing: the result of our last handshake check. A server with no remote endpoint shows as "runs locally". How we check.
Agents can read this page as data: MCP endpoint https://openforallofus.com/api/mcp, tool get_tool with name si.fourzerotwo/data.